CN104514519A - Breaking and falling object preventing device for oil well pipe column - Google Patents
Breaking and falling object preventing device for oil well pipe column Download PDFInfo
- Publication number
- CN104514519A CN104514519A CN201310454441.4A CN201310454441A CN104514519A CN 104514519 A CN104514519 A CN 104514519A CN 201310454441 A CN201310454441 A CN 201310454441A CN 104514519 A CN104514519 A CN 104514519A
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- CN
- China
- Prior art keywords
- pipe
- sleeve
- wall
- falling
- outer tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B40/00—Tubing catchers, automatically arresting the fall of oil-well tubing
Abstract
The invention discloses a breaking and falling object preventing device for an oil well pipe column, and the breaking and falling object preventing device is specially designed for preventing the falling object and avoiding the damage of the sleeve and pipe column. The device is as follows: an interior pipe is inserted in an exterior pipe, the outer wall of the exterior pipe is sleeved in a compressed sleeve having clamping spring at the outer wall, a spring, a cone connected via the thread, the sleeved cava and the correcting body provided with a correcting clamp, and a rail sleeve connected via the pin, the upper part of the correcting body is connected with an outer barrel provided with the inner steps while the lower part thereof is connected with a locating sleeve; the locating sleeve is connected with a rail sleeve, the self packing barrel is fixed on the outer wall of the rail sleeve; the barrel jacket is sleeved on the self packing barrel and fixed with the exterior pipe. The device can be sealed in a seat mode by lifting, rotating and putting and bear the pressing load of 540KN, the deblocking force is little, the oil pipe of 1500m can also be prevented for falling to the well bottom after deblocking, the falling speed and distance of the broken pipe column can be greatly reduced, the strong impact force can be inhibited, the pipe column can be effectively prevented for falling to the well bottom and the sleeve and the device can be protected away from damage.
Description
Technical field
The present invention relates to the disconnected de-resistance junk device of a kind of oil well pipe, belong to well recovery technical field.
Background technology
Oil well production ubiquity eccentric wear corrosion phenomenon, misoperation during operation can cause the disconnected well that comes off of tubing string, increases and salvages difficulty, improve risk, be lowered into power.At present, domestic pit shaft resistance junk instrument mainly contains three kinds: one and to be given up by Y441-115 packer, sleeve hydraulic and anti-fall property management string that pressure release ball seat forms, Y441-115 packer adopts bicone single deck tape-recorder watt anchored mode, and sleeve hydraulic is given up and adopted sleeve pipe to suppress mode to put aside; Two is the compound tube strings adopting plug+flat screen casing+ball check seat+Y441-146 packer assembly+releasing pup joint; Three is that Junk prevention device is connected with oil pipe, puts assembly form by anchor and lock, and after disconnected de-, device completes grappling because of velocity variations.First two instrument is hydraulic releasing formula, flexural deformation after oil pipe and device clash into, and is difficult to salvage, and instrument is stayed in pit shaft for a long time can be difficult to deblocking because of fouling, large to casing damage; The third instrument has strict demand to the tubing string speed of going into the well, can the misoperation because of scene operation lack of standardization.
Summary of the invention
The object of the present invention is to provide the disconnected de-resistance junk device of a kind of oil well pipe, to avoid sleeve pipe, tubing string and device damaged while effective Junk prevention.
Concrete technology contents of the present invention is as follows:
The interior pipe reducing pipe part of this device is inserted within the outer tube, and interior pipe bottom boss fastens step in outer tube; The track cover that outer tube outer wall is set with the wedging ring of outer wall belt jump ring, spring, the cone be threaded, the slips of suit and the centralizer body that righting clip is housed from top to bottom, is mounted by pin, centralizer body top is connected with the urceolus of interior step, bottom connecting positioning sleeve; Positioning sleeve joining rails cover, self-styled packing element is fixed on track cover outer wall; Packing element sheath is sleeved on self-styled packing element, and fixes with outer tube.
This device through on carry, rotate and transfer after can set; the lower compressive load of 540KN can be born; deblocking power is little; solution is honored as a queen and can be stoped disconnected the taking off of 1500m oil pipe equally and fall into shaft bottom; can greatly reduce tubing string break de-after gliding speed and distance; restrain the generation of powerful impact force, fall into shaft bottom after effectively preventing tubing string disconnected de-, protective casing and device are from damage.
Accompanying drawing explanation
Fig. 1 is the disconnected de-resistance junk apparatus structure schematic diagram of oil well pipe.
Detailed description of the invention
Embodiment:
With reference to Fig. 1, embodiments of the invention are further illustrated:
This device comprises interior pipe 1, outer tube 2, wedging ring 3, jump ring 4, spring 5, cone 6, slips 7, centralizer body 8, righting clip 9, positioning sleeve 10, self-styled packing element 11, packing element sheath 12, track cover 13, pin 14 and urceolus 15:
Interior pipe 1 reducing pipe part is inserted in outer tube 2, and interior pipe 1 bottom boss fastens step in outer tube 2.The track cover 13 that outer tube 2 outer wall is set with the wedging ring 3 of outer wall belt jump ring 4, spring 5, the cone 6 be threaded, the slips 7 of suit and the centralizer body 8 that righting clip 9 is housed from top to bottom, is mounted by pin 14, centralizer body 8 upper external thread is connected with the urceolus 15 of interior step, lower external thread connecting positioning sleeve 10.Positioning sleeve 10 internal thread joining rails cover 13, self-styled packing element 11 is fixed on track by heat treatment and overlaps 13 outer walls.Packing element sheath 12 is sleeved on self-styled packing element 11, and is fixed by slide block and outer tube 2.
This oil well pipe break de-resistance junk device to set flow process as follows:
This device is gone into the well behind precalculated position, above carries interior pipe 1, drives outer tube 2 up, then spun outer tube 2, its pin 14 is shifted out track cover 13, outer tube 2 is able to descending.Continue to transfer interior pipe 1, utilize tubing string to conduct oneself with dignity and press down wedging ring 3 and spring 5, snap in urceolus 15 to the jump ring 4 on wedging ring 3 and lock after step, promote cone 6 and drive outer tube 2 descending, strut slips 7, grappling sleeve pipe.Outer tube 2 promotes packing element sheath 12 and moves down, and make self-styled packing element 11 distending, the instrument of completing sets.
During upper lifting pipe post, outer tube 2 carried by interior pipe 1, band movable cone 6 is up, and slips 7 reclaims, instrument deblocking.If on to carry in process tubing string, namely cone 6 loses upper lifting force, then can be again descending under the effect of spring 5, promotes slips 7 card grapplings.
The break functional check process of de-resistance junk device of this oil well pipe is as follows:
Lower instrument sets: precalculated position of going into the well after being connected with this device by flow string, upper lifting pipe post, rotates, transfers grappling and set.Visit the end: transfer tubing string, when loadmeter tubing string load drops to 0KN by 19.5KN, tubing string load all drops on this device, and the actual setting position of instrument is constant, sentences this device thus and sets intact.
Tubing string is disconnected de-: carry 9.5m by tubing string, suppressed by ground installation, and manufacture tubing string and disconnect action, this device is grappling rapidly immediately.During salvaging, record tubing string top apart from well head 2.85m.As calculated, this device moves down distance 0.58m, falling speed 4.43m/s, and impact force is about 293KN, illustrate this device distance of glide and impact force little, grappling is reliable, can play the effect stoping tubing string to fall.
Pull out of hole: continue upper lifting pipe post, deblocking, the oil pipe tripped out does not occur bending and deformation, prove that this device stands intact.
Claims (2)
1. the disconnected de-resistance junk device of oil well pipe, is characterized in that:
Interior pipe (1) the reducing pipe part of this device is inserted in outer tube (2), and interior pipe (1) bottom boss fastens outer tube (2) interior step; The track cover (13) that outer tube (2) outer wall is set with the wedging ring (3) of outer wall belt jump ring (4), spring (5), the cone (6) be threaded, the slips (7) of suit and the centralizer body (8) that righting clip (9) are housed from top to bottom, is mounted by pin (14), centralizer body (8) top is connected with the urceolus (15) of interior step, bottom connecting positioning sleeve (10); Positioning sleeve (10) joining rails cover (13), self-styled packing element (11) is fixed on track cover (13) outer wall; Packing element sheath (12) is sleeved on self-styled packing element (11), and fixes with outer tube (2).
2. the disconnected de-resistance junk device of oil well pipe according to claim 1, is characterized in that centralizer body (8) upper external thread connects urceolus (15), lower external thread connecting positioning sleeve (10); Positioning sleeve (10) internal thread joining rails cover (13), self-styled packing element (11) is by heat treatment joining rails cover (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310454441.4A CN104514519B (en) | 2013-09-29 | 2013-09-29 | The disconnected de- resistance junk device of oil well pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310454441.4A CN104514519B (en) | 2013-09-29 | 2013-09-29 | The disconnected de- resistance junk device of oil well pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104514519A true CN104514519A (en) | 2015-04-15 |
| CN104514519B CN104514519B (en) | 2017-05-31 |
Family
ID=52790346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310454441.4A Active CN104514519B (en) | 2013-09-29 | 2013-09-29 | The disconnected de- resistance junk device of oil well pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104514519B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111946290A (en) * | 2020-10-09 | 2020-11-17 | 宜宾学院 | Coiled tubing prevents falling well device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2464932Y (en) * | 2001-02-15 | 2001-12-12 | 东营市朝阳通用机械有限责任公司 | Anchoring device for oil sucking pipe |
| CN2466345Y (en) * | 2001-01-10 | 2001-12-19 | 李�杰 | Oil pipe falling preventing device |
| US20060272828A1 (en) * | 2003-11-07 | 2006-12-07 | Manson David J C | Retrievable downhole tool and running tool |
| CN201874535U (en) * | 2010-11-25 | 2011-06-22 | 张秀梅 | Anti-drop device for pipe string of oil-water well |
| US20130068482A1 (en) * | 2011-09-20 | 2013-03-21 | Baker Hughes Incorporated | Drop In Completion Method |
| CN203515486U (en) * | 2013-09-29 | 2014-04-02 | 中国石油天然气股份有限公司 | Device for blocking broken and falling oil well tubular column |
-
2013
- 2013-09-29 CN CN201310454441.4A patent/CN104514519B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2466345Y (en) * | 2001-01-10 | 2001-12-19 | 李�杰 | Oil pipe falling preventing device |
| CN2464932Y (en) * | 2001-02-15 | 2001-12-12 | 东营市朝阳通用机械有限责任公司 | Anchoring device for oil sucking pipe |
| US20060272828A1 (en) * | 2003-11-07 | 2006-12-07 | Manson David J C | Retrievable downhole tool and running tool |
| CN201874535U (en) * | 2010-11-25 | 2011-06-22 | 张秀梅 | Anti-drop device for pipe string of oil-water well |
| US20130068482A1 (en) * | 2011-09-20 | 2013-03-21 | Baker Hughes Incorporated | Drop In Completion Method |
| CN203515486U (en) * | 2013-09-29 | 2014-04-02 | 中国石油天然气股份有限公司 | Device for blocking broken and falling oil well tubular column |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111946290A (en) * | 2020-10-09 | 2020-11-17 | 宜宾学院 | Coiled tubing prevents falling well device |
| CN111946290B (en) * | 2020-10-09 | 2022-07-19 | 宜宾学院 | Coiled tubing prevents falling well device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104514519B (en) | 2017-05-31 |
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